CN219035470U - Speed reducer for double-output crane - Google Patents
Speed reducer for double-output crane Download PDFInfo
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- CN219035470U CN219035470U CN202223104293.7U CN202223104293U CN219035470U CN 219035470 U CN219035470 U CN 219035470U CN 202223104293 U CN202223104293 U CN 202223104293U CN 219035470 U CN219035470 U CN 219035470U
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Abstract
The utility model relates to a speed reducer for a double-output crane, wherein a first input shaft and a second input shaft are connected to the front side of the middle of a box body in a penetrating way, a planetary transmission gear set is arranged on the first input shaft, a first input gear is sleeved at the rear part of a planet carrier, one side of the first input gear is meshed with a first output transmission mechanism, the other side of the first input gear is meshed with a first intermediate gear on a first intermediate shaft, the first intermediate gear is meshed with a second intermediate gear of a second intermediate shaft, the second intermediate gear is meshed with a second input gear of the second input shaft, the second input shaft is meshed with a second intermediate gear on the second intermediate shaft through the second input gear, the second intermediate gear is meshed with a first intermediate gear of the first intermediate shaft, and the first intermediate gear is meshed with the external teeth of the input gear. The planetary reducer has the advantages that the double input and double output can effectively protect the motor on the basis of reducing the speed ratio and improving the torque, and can ensure the lifting safety and improve the operation efficiency.
Description
Technical Field
The utility model relates to the field of speed reducers, in particular to a speed reducer for a double-output crane.
Background
The existing hoisting machinery often drives a speed reducer and a winding drum through a motor, and drives a lifting hook to operate up and down through an output shaft running at a low speed so as to realize lifting of an object. But for some applications it is not well satisfactory to require two or more hooks to be raised and lowered simultaneously and to require two or more hooks to be mechanically synchronized.
For example, chinese patent CN216235782U discloses a speed reducer for hoisting machinery, wherein a high-speed shaft of an input shaft rotates to drive two low-speed output shafts to synchronously rotate, so that two output shafts drive two reels to wind two or more lifting hooks to synchronously operate. Although two or more lifting hooks are synchronously operated, the input shaft is only provided with one end, in the application of high-power equipment, the input shaft is only connected with the input equipment through an output shaft at one end, the effect of lifting torque through speed reduction on a speed reducer is often not enough, in order to realize high speed reduction effect, the speed reducer still needs to be used together with other speed reducers, the space is limited, the lifting object can only be used together, the operation process is influenced, when a single input shaft is in fault in the operation, unbalance of the lifting equipment is easily caused, the lifting object is required to be repaired on the basis of being processed, and the existing speed reducer cannot solve the problems.
Disclosure of Invention
The utility model provides a double-input double-output speed reducer for a crane, which can effectively protect a motor on the basis of reducing the speed ratio and improving the torque, and can ensure the lifting safety and improve the operation efficiency.
The technical scheme adopted by the utility model is as follows: the utility model provides a speed reducer for dual output crane, includes box, its characterized in that: the front side of the middle part of the box body is connected with a first input shaft and a second input shaft in a penetrating way, the first input shaft is provided with a planetary transmission gear set, the planetary transmission gear set comprises a sun gear, a planet carrier, a planet wheel, an input gear and a hub, the planet carrier is sleeved with the first input shaft through a bearing, the sun gear on the first input shaft is meshed with the planet wheel on the planet carrier, the planet shaft is connected with the planet carrier in a penetrating way, the planet wheel is meshed with the inner teeth of the input gear, the input gear is fixed on the hub through pins, the hub is sleeved on the front part of the planet carrier through a bearing, the rear part of the planet carrier is sleeved with the first input gear, one side of the first input gear is meshed with a first output transmission mechanism, the other side of the first input gear is meshed with a first intermediate gear on the first intermediate shaft, the first intermediate gear is meshed with a second intermediate gear on the second intermediate shaft, the second input gear is meshed with a second output transmission mechanism through the second intermediate gear on the second intermediate shaft, and the second intermediate gear is meshed with the first intermediate gear on the first intermediate gear of the first intermediate shaft; the first output transmission mechanism and the second output transmission mechanism are symmetrically arranged, the first output transmission mechanism and the second output transmission mechanism respectively comprise a first middle output shaft, a first middle output gear, a second middle output shaft, a second middle output gear, an output shaft and an output gear, the first middle output shaft is meshed with the second middle output gear on the second middle output shaft through a first middle output tooth part, the second middle output shaft is meshed with the output gear on the output shaft through a second middle output tooth part, the first middle output gear is further arranged on the first middle output shaft, the first middle output gear in the first output transmission mechanism is meshed with the first input gear, and the first middle output gear in the second output transmission mechanism is meshed with the second input gear.
Further, the first input gear is sleeved on the planet carrier through a key.
Further, the planet carrier is in interference fit with the first input gear.
Further, the planet axle is limited on the planet carrier through a pin shaft.
Further, the outputs of the first output transmission mechanism and the second output transmission mechanism are connected to the same side or different sides of the box body.
Based on the scheme, the utility model has the following positive and beneficial effects:
1. when the first input shaft is input, the planetary gears are meshed with the sun gear, the planetary gears drive the first input gears on the planetary carriers through the planetary shafts, and two sides of the first input gears are respectively transmitted to output shafts in the first output transmission mechanism and the second output transmission mechanism; when the second input shaft is input, the second input shaft is respectively transmitted to output shafts in the first output transmission mechanism and the second output transmission mechanism through two sides of the second input gear, at the moment, the second input tooth part is meshed with a second intermediate gear on the second intermediate shaft and is transmitted to an input gear on the first input shaft planet carrier, at the moment, the first input shaft does not rotate, and a motor is protected; when one input shaft fails, the other input shaft can be started, so that the operation safety is ensured, the operation time is saved, and the working efficiency is improved.
2. When the first input shaft and the second input shaft are input simultaneously, the input speed ratio can be effectively reduced, the torque is improved, and other speed reducers are not required to be added to hoist large-scale equipment.
Drawings
FIG. 1 is a schematic top view of the present utility model;
FIG. 2 is a schematic diagram of a first output transmission mechanism according to the present utility model;
fig. 3 is an enlarged schematic view of the structure of fig. 1 a according to the present utility model.
In the figure: the planetary gear set comprises a box body 1, a first input shaft 2, a second input shaft 3, a planetary gear set 4, a sun gear 401, a planet carrier 402, a planetary shaft 403, a planet wheel 404, an input gear 405, a hub 406, a first input gear 5, a first output transmission mechanism 6, a second output transmission mechanism 7, a first intermediate shaft 8, a first intermediate gear 9, a second intermediate shaft 10, a second intermediate gear 11, a second input gear 12, an output gear 13, a first intermediate output shaft 14, a first intermediate output gear 15, a second intermediate output shaft 16, a second intermediate output gear 17 and an output shaft 18.
Detailed Description
Further description is provided below with reference to the drawings and examples.
Referring to fig. 1 to 3, the present utility model provides a technical solution: the speed reducer for the double-output crane comprises a box body 1, a first input shaft 2, a second input shaft 3, a first input gear 5 of a planetary transmission gear set 4, a first output transmission mechanism 6, a second output transmission mechanism 7, a first intermediate shaft 8, a first intermediate gear 9, a second intermediate shaft 10, a second intermediate gear 11 and a second input gear 12. The first output transmission mechanism 6 and the second output transmission mechanism 7 in the box body are symmetrically arranged, the first output transmission mechanism and the second output transmission mechanism (see fig. 1) comprise a first middle output shaft 14, a first middle output gear 15, a second middle output shaft 16, a second middle output gear 17, an output shaft 18 and an output gear 13, and the first output transmission mechanism or the second output transmission mechanism are arranged as follows: the first intermediate output shaft 14 is provided with a first intermediate output gear 15, the first intermediate output shaft 14 is meshed with a second intermediate output gear 17 on a second intermediate output shaft 16 through a first intermediate output tooth part, the second intermediate output shaft is meshed with an output gear 13 on an output shaft 18 through a second intermediate output tooth part, and the output shaft extends out of the front side of the box body to be externally connected for output. The front side of the middle part of the box body 1 (see fig. 2) is connected with a first input shaft and a second input shaft in a penetrating way, the first input shaft 2 is provided with a planetary transmission gear set 4, the planetary transmission gear set comprises a sun gear 401, a planet carrier 402, a planet shaft 403, a planet wheel 404, an input gear 405 and a hub 406, the sun gear on the first input shaft is meshed with the planet gear on the planet shaft, the planet shaft is connected with the planet carrier in a penetrating way, the planet shaft is limited by a pin shaft, the planet wheel 404 is meshed with the inner tooth of the input gear 405, the input gear is fixed on the hub 406 through pins, the hub is sleeved on the front part of the planet carrier 402 through a bearing, the rear part of the planet carrier (see fig. 3) is sleeved with a first input gear 5 through a key, one side of the first input gear is meshed with a first intermediate output gear 15 in the first output transmission mechanism 6, the other side is meshed with the first intermediate gear 9 on the first intermediate shaft 8, the first intermediate gear is meshed with a second intermediate gear 10, the second intermediate gear 12 of the second intermediate gear is meshed with the second intermediate gear 3, the second intermediate gear 7 is meshed with the second input gear 15 in the second output mechanism, the first output shaft is driven by the first output shaft in the transmission mechanism 1.
When the first shaft fails, the second input shaft can be started, so that maintenance operation time is saved, and working efficiency is improved. The second input shaft 3 is meshed with a second intermediate gear 11 on the second intermediate shaft 10 through a second input tooth part, the second intermediate gear is meshed with a first intermediate tooth part of the first intermediate shaft 8, and the first intermediate tooth part is meshed with external teeth of the input gear 405, so that the first input shaft 2 cannot rotate at the moment, and the motor is protected; the second input shaft 3 is also provided with a second input gear 12, one side of the second input gear is meshed with a first intermediate output gear 15 in the second output transmission mechanism 7 and is transmitted to an output shaft in the second output transmission mechanism, the other side of the second input gear is meshed with a second intermediate tooth part of the second intermediate shaft 10, the second intermediate tooth part is meshed with a first intermediate gear 9 on the first intermediate shaft 8, the first intermediate gear is meshed with a first input gear 5 sleeved on a planet carrier, and the first input gear is meshed with a first intermediate output gear 15 in the first output transmission mechanism 6. (see FIG. 1)
When the first input shaft and the second input shaft are input simultaneously, the input speed ratio can be effectively reduced, and the torque is improved.
On the basis of this embodiment, an interference fit between the planet carrier and the first input gear is also possible.
On the basis of the embodiment, the output of the first output transmission mechanism and the output of the second output transmission mechanism can be connected to the same side or different sides of the box body.
Claims (5)
1. The utility model provides a speed reducer for dual output crane, includes box, its characterized in that: the front side of the middle part of the box body is connected with a first input shaft and a second input shaft in a penetrating way, the first input shaft is provided with a planetary transmission gear set, the planetary transmission gear set comprises a sun gear, a planet carrier, a planet wheel, an input gear and a hub, the planet carrier is sleeved with the first input shaft through a bearing, the sun gear on the first input shaft is meshed with the planet wheel on the planet carrier, the planet shaft is connected with the planet carrier in a penetrating way, the planet wheel is meshed with the inner teeth of the input gear, the input gear is fixed on the hub through pins, the hub is sleeved on the front part of the planet carrier through a bearing, the rear part of the planet carrier is sleeved with the first input gear, one side of the first input gear is meshed with a first output transmission mechanism, the other side of the first input gear is meshed with a first intermediate gear on the first intermediate shaft, the first intermediate gear is meshed with a second intermediate gear on the second intermediate shaft, the second input gear is meshed with a second output transmission mechanism through the second intermediate gear on the second intermediate shaft, and the second intermediate gear is meshed with the first intermediate gear on the first intermediate gear of the first intermediate shaft; the first output transmission mechanism and the second output transmission mechanism are symmetrically arranged, the first output transmission mechanism and the second output transmission mechanism respectively comprise a first middle output shaft, a first middle output gear, a second middle output shaft, a second middle output gear, an output shaft and an output gear, the first middle output shaft is meshed with the second middle output gear on the second middle output shaft through a first middle output tooth part, the second middle output shaft is meshed with the output gear on the output shaft through a second middle output tooth part, the first middle output gear is further arranged on the first middle output shaft, the first middle output gear in the first output transmission mechanism is meshed with the first input gear, and the first middle output gear in the second output transmission mechanism is meshed with the second input gear.
2. The speed reducer for a double-output crane according to claim 1, characterized in that: the first input gear is sleeved on the planet carrier through a key.
3. The speed reducer for a double-output crane according to claim 1, characterized in that: the planet carrier is in interference fit with the first input gear.
4. The speed reducer for a double-output crane according to claim 1, characterized in that: one side of the planetary shaft is limited on the planetary frame through a distribution shaft.
5. The speed reducer for a double-output crane according to claim 1, characterized in that: the output of the first output transmission mechanism and the output of the second output transmission mechanism are connected to the same side or different sides of the box body.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223104293.7U CN219035470U (en) | 2022-11-22 | 2022-11-22 | Speed reducer for double-output crane |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202223104293.7U CN219035470U (en) | 2022-11-22 | 2022-11-22 | Speed reducer for double-output crane |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN219035470U true CN219035470U (en) | 2023-05-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202223104293.7U Active CN219035470U (en) | 2022-11-22 | 2022-11-22 | Speed reducer for double-output crane |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN219035470U (en) |
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2022
- 2022-11-22 CN CN202223104293.7U patent/CN219035470U/en active Active
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